diff --git a/psutil/tests/test_process_all.py b/psutil/tests/test_process_all.py
index e367a8251..cf7f11206 100755
--- a/psutil/tests/test_process_all.py
+++ b/psutil/tests/test_process_all.py
@@ -41,7 +41,7 @@
 from psutil.tests import serialrun
 
 
-USE_PROC_POOL = True
+USE_PROC_POOL = not CI_TESTING
 
 
 def proc_info(pid):